<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>01_call和apply</title>
</head>

<body>
    <script type="text/javascript">
        var foo = {
            value: 1
        }
        function bar() {
            console.log(this.value);
        }
        bar.call(foo);

        var foo1 = {
            value: 2,
            bar: function () {
                console.log(this.value);
            }
        }
        foo1.bar()

        function bar1(name, age) {
            console.log(name);
            console.log(age);
            console.log(this.value);
        }
        bar1.call(foo, 'kevin', 18)

        var value = 1
        bar.call(null)


    </script>
</body>

</html>